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B&M Hi-Tek Cast Aluminum Diff Covers 71504 & 70504 for GM 8.875YouTube Button

Cast Aluminum Differential Cover for GM 8.875" 12 Bolt Truck

Differential Cover

PART# 70504

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$202.95   Suggested Retail
$181.95   Your Price
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Designed to fit most vehicles with GM 8.875" 12 Bolt Truck differential, however each vehicle may have other interfering components and adequate clearance and fitment should be verified prior to purchase & installation. Refer to ID guide and measurement

Overview

B&M Cast Aluminum Differential Covers are designed to strengthen the differential by preventing case distortion and ring gear & bearing cap deflection. Constructed of A356.0-T6 aluminum, these rugged covers significantly increase the fluid capacity and dissipate heat much faster than the stock factory unit to prolong the life of your ring and pinion gears. Additional features include an engraved B&M logo, drain and fill port locations, a magnetic drain plug for catching ferrous metal particles, and complete hardware and installation instructions.

Features:

  • 0.50 quarts extra fluid capacity and cooling/strengthen ribs keeps temperature cooler
  • Load bolts provide additional support to bearing caps
  • B&M Logo Engraved
  • A356.0-T6 Aluminum Construction

Specs

Bolt Count12
Bolt PatternGM 8.875 Truck
BrandB&M
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 RequiredYes
Call Out Size (in)3.27
Carrier Main Cap SupportYes
Color/FinishRaw Aluminum
Drain Plug IncludedYes
Emission Code5
Filler Plug IncludedYes
Gasket IncludedNo
MaterialA356.0-T6 Aluminum
Product TypeDifferential Cover
Thickness (in)3.62
Part Number70504

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

In The Box

In The Box

  • Aluminum cover
  • fill & drain plugs
  • bolts & washers
  • load bolts & nuts
  • warranty

Tech Resources

Designed to fit most vehicles with GM 8.875" 12 Bolt Truck differential, however each vehicle may have other interfering components and adequate clearance and fitment should be verified prior to purchase & installation. Refer to ID guide and measurement

Applications

Reviews

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.